newbie looking to buy AK

[AK671]

I am in the market to buy a weapon and I was provided with a description of a possible one for sale. Ser# P47-01xxx AK-47s Polytech 762x39. I know a photo can do wonders, but none at this point. Can someone enlighten me as to what I may be looking at purchasing based on this description? After looking on the net, etc., there seems to be numbers on parts of the gun that should match. The asking price is $2,500.00 with magazines. Any recommendations how to make an informed decision? Thanx!

I forgot, but additional info I received from seller is that it is a Pre-ban, milled receiver with wood furniture.